The 22-year-old actress, who began her studies at the university in 2009, claimed that the American establishment was really tough, Contactmusic reported.
"My first two years at Brown weren't easy, not because I was bullied or because anyone gave me a particularly hard time, but just because, you know, without the collegiate system and at Brown everyone does completely different things and very much chooses their own path, which is great, but it's also much more difficult, too," she said.
"You're not with a group of people all the time at one time," the star said.
The British star, who completed her third year at Oxford University recently, shot to fame after playing Hermione Granger in the 'Harry Potter' film series.
